"A species consists of a group of populations……" — Ernst Mayr
"A species consists of a group of populations which replace each other geographically or ecologically and of which the neighboring ones integrate or hybridise wherever they are in contact or which are potentially capable of doing so (with one or more of the populations) in those cases where contact is prevented by geographical or ecological barriers."
—
Ernst Mayr
★
★
★
★
★
0.0 avg (0 ratings)
43 Quotes by Ernst Mayr
Ernst Mayr has 43 quotes on this site.
A few more worth reading:
-
Biology can be divided into the study of proximate causes, the study of the physiological sciences (broadly conceived), and into…
-
It is curious how often erroneous theories have had a beneficial effect for particular branches of science.
-
All interpretations made by a scientist are hypotheses, and all hypotheses are tentative. They must forever be tested and they…
-
I have the honesty to say I'm an Atheist. There is nothing that supports the idea of a personal God.
-
On the other hand, famous evolutionists such as Dobzhansky were firm believers in a personal God. He would work as…
-
Evolution ... is opportunistic, hence unpredictable.
-
A species is a reproductive community of populations reproductively isolated from others that occupies a specific niche in nature.
-
There are a number of attributes of species and populations that are not of any particular selective advantage to any…
-
Paleontologists had long been aware of a seeming contradiction between Darwin's postulate of gradualism, confirmed by the work of population…
-
Every politician, clergyman, educator, or physician, in short, anyone dealing with human individuals, is bound to make grave mistakes if…
-
According to the concept of transformational evolution, first clearly articulated by Lamarck, evolution consists of the gradual transformation of organisms…
-
Evolution, thus, is merely contingent on certain processes articulated by Darwin: variation and selection. No longer is a fixed object…
See all 43 quotes by Ernst Mayr »
More Barriers Quotes
This quote is filed under Barriers Quotes,
one of 630 quotes in that category. Here are a few more:
-
The Sixties was a time of breaking down class barriers, although I think class still exists today in some areas.
— David Bailey
-
Technology gives us the facilities that lessen the barriers of time and distance - the telegraph and cable, the telephone,…
— Emily Greene Balch
-
The barriers are not erected which can say to aspiring talents and industry, 'Thus far and no farther.'
— Ludwig van Beethoven
-
The biggest barrier we've seen to student progress is this: School policies and practices often prevent good teachers from doing…
— Eli Broad
-
I grill almost all of my fish with the skin on because that gives you real protection at least on…
— Alton Brown
-
The biggest - one of the biggest barriers to driving economic growth is the capital gains tax rate. I propose…
— Herman Cain
-
Nobody motivates today's workers. If it doesn't come from within, it doesn't come. Fun helps remove the barriers that allow…
— Herman Cain
-
The principle that human nature, in its psychological aspects, is nothing more than a product of history and given social…
— Noam Chomsky
-
Love recognizes no barriers. It jumps hurdles, leaps fences, penetrates walls to arrive at its destination full of hope.
— Maya Angelou
-
Anybody who gives you a belief system is your enemy, because the belief system becomes the barrier for your eyes,…
— Rajneesh
-
Where the loser saw barriers, the winner saw hurdles.
— Robert Breault
-
So people have to decide. Do they want to have the security? Do they want to continue to plug the…
— Michael Chertoff
See all 630 Barriers Quotes »